You are explaining the causes of smoker's cough to a client, including altered function of the cilia in the lining of large respiratory passages. Which of these is true
A. Toxins in cigarette smoke irritate nerves under the cilia, causing a cough.
B. Smoking damages the cilia, rendering them unable to sweep mucus out of the respiratory passages, resulting in coughing.
C. Smoking causes the cilia to produce more mucus, resulting in coughing.
D. Cigarette smoke causes an overgrowth of cilia, leading to cough
Ans: B. Smoking damages the cilia, rendering them unable to sweep mucus out of the respiratory passages, resulting in coughing.
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A species that is naturally found only in a particular location is called
A. extinct. B. endemic. C. extinct due to the action of humans. D. exotic. E. transitional.
A vaccination is a good example of
A. artificially acquired passive immunity. B. artificially acquired active immunity. C. naturally acquired passive immunity. D. naturally acquired active immunity.
A child dies following a series of chronic bacterial infections. At the autopsy, the physicians are startled to see that the child's white blood cells are loaded with vacuoles containing intact bacteria. Which of the following explanations could account
for this finding? A) A defect in the Golgi apparatus prevented the cells from processing and excreting the bacteria. B) A defect in the rough endoplasmic reticulum prevented the synthesis of the antibodies (defensive proteins) that would have inactivated the bacteria. C) A defect in the cell walls of the white blood cells permitted bacteria to enter the cells. D) A defect in the lysosomes of the white blood cells prevented the cells from destroying engulfed bacteria.
Meristic traits are characterized by having phenotypes that are described by ________
A) whole numbers B) irrational numbers C) imaginary numbers D) complex numbers E) prime numbers